Window.



M. F. SITTA.

WINDOW.

APPLICATION FILED APR.19, I9l5.

Patented Feb. 22, 1916.

2 SHEETS -SHEET 1.

Elwomfoz 55750 M. F. SITTA.

WINDOW.

APPLICATION FILED APR. w. 19):).

1 m. 04 2% 4 w F u. 2 n m a D1 METHOD 1?. SITTA, OF CHICAGO, ILLINOIS.

WINDOW.

Application filed April 19, 1915.

To all whom it may concern:

-Be it known that 1, METHOD F. SITTA, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful lm provements in Windows, of which the following is a specification.

This invention relates to windows, and it has particular reference to that class of win dows in which the top and bottom sashes when in closed position are located in substantially vertical alinement and in which each sash is capable of being swung about a substantially horizontal axis to present the outer face of the glass in an inward direction for convenience in cleaning.

. The present invention has for its object to simplify and improve the construction of a window of the type above referred to.

A further object of the invention is to produce simple, improved and effective means for tightening the sashes and espe cially the lower sash to hold the same securely against rattling.

A further object of the invention is to provide an improved construction whereby adjustment of the sashes may be conveniently effected for the purpose of regulating ventilation, the sashes being supported 1n ventilating position in such fashion as to avoid obnoxious drafts.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

I In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,Figure 1 is an inside elevation of a window constructed in accordance with the invention. Fig. 2 is a vertical sectional view taken on the line 22 in Fig. 1. Fig. 3 is a vertical sectional view taken on the line 3'3 in Fig. 1, the bottom sash being tilted in an inward direction. Fig. 4 is a view substantially like Fig. 3, but showing-the sashes adjusted to provide top and bottom ventilation. Fig. ,5 is a perspective Specification of Letters Patent.

Serial No. 22,435.

detail view showing a portion of the lower sash frame and showing also a portion of the combined tightening member and guide detached from the sash frame. Fig. 6 is a sectional detail View taken on the line 66 in Fig. 1. Fig. 7 is asectional detail view taken on the line 77 in Fig. 1. Fig. 8 is a sectional detail view taken on the line 88 in Fig. 6.

Corresponding parts in the several figures are denoted by like characters of reference.

The window frame or casing comprises the usual side members 15, top member or cap 16 and sill 17. Secured on the side members 15 are the outer beads 18 which ex tend the full length of said side members and on which the top and bottom sashes A, B abut when in closed position. The meeting rails 19, 20 of the top and bottom sashes are provided with lap-joints, each presenting two downwardly and outwardly inclined faces 21, 22 which are disposed in substantially parallel relation and which are offset from each other by a step or shoulder 23 lying in a plane substantially at right angles to the faces 21, 22. A lap-joint is thus formed which will shed water in an outward direction, but which will not interfere with the tilting of the upper end of the lower sash in an inward direction, this being a structural feature of considerable importance.

The top sash A is guided for vertical movement between the outer beads 18 and the guide members 24, which, for convenience, may be-called the parting beads and which consist of plates secured on and spaced from the inner faces of the side members 15 by spacing members 25, said plates or beads extending downwardly from the top of the window casing, and terminating above the bottom sash to enable the latter to be tilted in an inward direction, as shown in Figs. 3 and 4c- The spacing members are interrupted or mutilated to form recesses 26 near the top of the window frame wherein guide pulleys'27 are supported for rotation. The top and bottom sashes are connected together by flexible elements, such as cords or chains 28, which are terminally connected with the side rails or stiles of the sashes about midway between their upper and lower ends, the connection being made in such fashion as to permit the sashes to swing pivotally thereabout. The stiles of the respective sashes are groovedfor the passage Patented Feb. 22, 1916.

of the connecting members or chains the grooves 29, 30 of the respectivesashes communicating with the front faces attheir upper ends, as seen at 31, 32, in order that the connecting elements may be properly guided to permit the lower sash to be placed in vertical alinement with the upper sash, as seen in Fig. 2. A latch C of well known con struction is provided for the purpose of locking the meeting rails of the sashes together in closed relation.

The side rails or stiles of the bottom sash I B are provided with recesses 33,3at near their upper and lower ends, said recesses be ing provided with cap plates 35. The recesses 33, 34 are engaged back of the cap plates 35 by hooks 36 projecting from the combined tightening members and guides 37, each of which consists of a bead, beveled at its upper end, as seen at 38, to engage the correspondingly beveled lower ends 39 of the parting beads and extending from said partingbeads to the sill 17 of the window casing when the parts are assembled, as in Figs. 1 and 2. The vertical extent of the recesses 33, 34 determines the extent to which the window sashes may be ordinarily adjusted for ventilating-purposes.

The slats or members 37 are each provided with a transverse slot 39 wherein is fulcrumcd a locking lever l0 having an inwardly extending wedge-shaped arm 41 adapted to enter the recess l2 in the opposed side member of the window casing, and to coeperate with the cam face 43 of a facing plate 4t extending across such recess. The levers 40 are arranged in such a manner that by manipulating said levers the wedgeshaped arms 4.1 may be retracted within the slots 39 so as not to interfere with the tilting movement of the bottom sash. It will be observed that when the tightening and guide members 37 are assembled with the side rails or stiles of the bottom sash and the latter is positioned below and in alinement with the top sash. the members 37 will cooperate with the parting beads to form a neat inside finish, and that the parts may not only be assembled securely in this relation by manipulating the levers 40, but that by manipulation of such levers, bringing the wedge-shaped arms ll in engagement with the cam faces of the plates 44, the bottom sash will be forced outwardly against the outside beads 18, at the same time closing the lap-joint between the meeting rails of the sashes tightly, thereby holding the bottom sash and also to some extent 'the top sash I very securelv against rattling and against accidental. displacement.

W hen it is desired to open the window for ventilation the levers 40 are manipulated to retract the wedge-shaped arms 41 within the slots 39. after which. by releasing the latch C the-top" edge of the bottom sash may be 37 rocking on their lower inside corners, as

seen in Figs. 3 and 4'. Ventilation will thus be afforded between the meeting rails of the two sashes, the incoming air being guided in an upward direction, as will be clear by reference to Fig. 3, thus avoiding horizontal drafts. The bottom sash may be secured in adjusted position by means of bolts 45 mounted on the sides of the window casing and adapted to engage recesses 46 in the innor faces of the members 37, it being understood, however, that fastening means of any well known type may be employed. If in creased "entilation is desired, the bottom sash may be guided upwardly with respect to the members 37, as seen in Fig. 4, thereby causing the top sash to drop gravitationally to an extent commensurate with the lifting of the bottom sash, thus affording ventilation not only between the meeting rails, but also between the top and bottom rails of the upper and lower sashes and the top and sill, respectively, of the window casing.

For cleaning purposes the members 37 may be disengaged from the bolts 45, permitting the bottom sash to swing clear of the window frame until the members 37 may be detached. The bottom sash may now be swung pivotally about the substantially horizontal axis of the points at which it is connected with the flexible elements 25 to present the outer face of the glass in a substantially horizontal plane or in an inward direction, as may be desired, after which the bottom sash may be moved to the top of the window casing, permitting the top sash to pass beneath the parting heads when it may be swung in a like manner.

As will be seen from the foregoing description, taken in connection with the drawings hereto annexed, I have produced a simple, improved and effective window construction which will not only facilitate the cleaning of the window glass, but which will also permit ventilation to be thoroughly regulated and controlled.

Having thus described the invention, what is claimed as new, is

1. In a window, a casing, and pulleys arranged at the upper portion of said casing, in combination with a top and a bottom sash, flexible elements guided over the pulleys and secured to the sashes at intermediate points of their heights, bead members slidably connected with the stiles of the lower sash, and means for holding said members at various adjustments with relation to the window casing whereby at some adjustments of the bead members the bottom sash may be slid ably guided thereon'to produce a reverse movement of the top sash.

2. In a window, a casing having pulleys, top and bottom sashes, flexible elements guided over the pulleys and terminally con nected with the top and bottom sashes, bead members slidably connected with the stiles of the bottom sash, and means for securing said head members at various adjustments with respect to the window casing.

In a window, a casing and a sash, in

a combination with a bead slidably connected with a stile of said sash, a locking lever mounted on said bead, and a cam mounted on the window casing in the path of said locking lever and adapted to cooperate therewith.

4. In a window, a casing having a cam member, and a sash having guide grooves, in combination with a tightening bead having guide tongues to engage the grooves, and a locking lever fulcrumed on the bead for engagement with the cam member of the sash.

5. In a window, top and bottom sashes, suitably guided flexible elements connected with said sashes, the stiles of the bottom sash being provided with longitudinal guide slots, in combination with guide beads having tongues slidably engaging the guide slots, and means for securing the beads at various adjustments relative to the side members of the casing.

In testimony whereof I afliX my signature in presence of two Witnesses.

METHOD F. SITTA. Witnesses H. K. MUELLER, JAMES A. KoEHL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. O. 

